OPERATING EXPENDITURE 207
Within each category, the detail for monthly figures is based on logic. Take a simple
example. Suppose that you estimate that you will spend approximately $500 on station-
ery each month. Should you just enter $500 for each month? Or should you work out
exactly what will be purchased in which months and arrive at a projection such as $534
for January, $405 in February and so on?
The answer is self-evident when you apply cost-benefit logic. How much work is
required to arrive at the estimates – compared to the usefulness of the results? How large
are the amounts in relation to the overall plan? What is the importance of capturing any
erratic patterns?
For example, if you know that total expenditure will be tens of thousands of dollars a
month and spending on fuel will vary by around $50 a month you can safely use the same
amount for each month (the projected annual cost divided by 12). It would be pointless to
spend a day trying to achieve an exact projection. On the other hand, if you expected out-
lays on fuel to vary by 50% a month you should use a closer projection for each month.
DEPRECIATION AGAIN
By the way, when you built up your capital spending plans you created a depreciation
schedule. This gives you several ready-made entries. Just pull the depreciation figures into
the production and operating cost tables. For example, leasehold improvements in the
operating costs shown in Figure 9.4 (line E-22) are copied directly from the depreciation
schedule shown in Figure 9.2 (line D-13). As you can see, the work you do early on feeds
into the later tasks. Forecasting becomes easier and easier as you progress.
FORECASTING TRICKS
At this point, you might be saying that it is all very well for me to ask you to forecast oper-
ating costs, but more difficult for you to do. Well, in fact, there are some handy rules of
thumb that you can apply. The obvious one – I hardly like to mention this – is to assess
spending required for the year and divide by 12.
If you know that seasonal patterns make it a reasonably certain bet that
50% of your sales will occur in January, it would be dishonest to show the
monthly average rather than the actual projection (even if this would make
your year-to-date figures look very good for the first few months of the year).